Some economists would argue that extreme weather can increase criminal behavior by reducing incomes—especially in the agriculture sector. But in this podcast, economist Gordon McCord says the psychological effect of higher temperatures on violent behavior plays a prominent role. McCord is coauthor of a study that uses data from homicides in Mexico spanning 15 years, and considers the impact of a cash transfer program on reducing interpersonal violence on hot days. He presented his research at the 2018 American Economic Association’s Annual Meeting in Philadelphia.